/Engine/Source/Runtime/Core/Public/Math/Rotator.h
Initialize this Rotator based on anFString. The String is expected to contain P=, Y=, R=. TheTRotatorwill be bogus when InitFromString returns false.
true if the P,Y,R values were read successfully; false otherwise.
bool InitFromString ( const [FString](API\Runtime\Core\Containers\FString) & InSourceString )